Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(24))
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(15)(5))
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

Name:	us-gaap_DividendsPayableCurrentAndNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

ORGANIZATION AND BASIS OF PRESENTATION - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Aug. 04, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Aug. 03, 2021
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)		$ 0.535	$ 0.535	$ 0.505	$ 0.505
Subsequent Event \| Evergy Kansas Central
Dividends Payable [Line Items]
Dividends payable						$ 170.0
Subsequent Event \| Evergy Metro
Dividends Payable [Line Items]
Dividends payable						$ 50.0
Common Stock \| Subsequent Event
Dividends Payable [Line Items]
Dividends declared on common stock (in dollars per share)	$ 0.535